Added 8 October 2026
acrimonious
/ˌæk.ɹɪˈməʊ.nɪ.əs/ adjective
Latin root: ācrimōniōsus Wiktionary
adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about acrimonious at Wordnik → Where our words come from →
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Marked by strong resentment or cynicism.
an acrimonious dispute
Origin
From acrimony + -ous; compare French acrimonieux (“acrimonious”), from Latin ācrimōniōsus (“acrimonious”), from ācrimōnia (“pungency, sharpness; acrimony, austerity”) + -ōsus (suffix meaning “full of; prone to”, forming adjectives from nouns) (ultimately from Proto-Indo-European *-went- or *-wont- + *-to-).
From Wiktionary, via Kaikki.org (CC BY-SA)